CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 59,242	$ 55,802
Accounts receivable, net of allowance of $1,155 and $1,218, respectively	239,233	269,685
Deferred tax assets	7,947	11,768
Prepaid expenses and other current assets	23,807	18,676
Current assets of discontinued operations	12	3,498
Total current assets	330,241	359,429
Property and equipment, net	2,582,019	2,608,740
Restricted cash	5,020	5,013
Investment in direct financing lease	7,928	9,233
Goodwill	11,988	11,988
Other assets	30,479	25,047
Non-current assets of discontinued operations		181
Total assets	2,967,675	3,019,631
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued expenses	171,048	195,726
Income taxes payable	98	605
Current liabilities of discontinued operations	963	2,031
Total current liabilities	172,109	198,362
Long-term debt	1,131,152	1,245,014
Deferred tax liabilities	137,276	136,503
Other liabilities	35,060	31,730
Total liabilities	1,475,597	1,611,609
Commitments and contingencies
Preferred stock - $0.01 par value; 50,000 shares authorized; none issued and outstanding at September 30, 2012 and December 31, 2011, respectively
Common stock - $0.01 par value; 300,000 shares authorized; 100,048 and 99,528 shares issued and outstanding at September 30, 2012 and December 31, 2011, respectively	1,000	995
Additional paid-in capital	1,142,271	1,129,435
Retained earnings	348,807	277,592
Total stockholders' equity	1,492,078	1,408,022
Total liabilities and stockholders' equity	$ 2,967,675	$ 3,019,631